Bobbin support for weft-replenishing mechanism



Mar. 5, 1929.

J. E. HUME ET AL BOBBIN SUPPORT FOR WEFT REPLENISHING MECHANISM 24, 1924 2 Sheets-Sheet F i'led Sept.

v Illl J 1929- J. E. HUME ET M. 1,703,935

BOBBIN SUPPORT FOR WEET REPLENISHING MECHANISM I Filed Sept. 24, 1924 2 Sheets-Sheet 2 Patented Mar. 5, 1929.

UNITED STATES PATENT OFFICE.

JOHN E. HUME AND WILLIAM H. KING, OF CLINTON,MASSACHUSETTS, ASSIGNORS 'I.O

GROMPTON & KNOWLES LOOM. WORKS,

PORA'IION OF MASSACHUSETTS.

or wonciis'rnn, MASSACHUSETTS, A con BOBBIN SUPPORT FOR WEFTREPLENISHING MECHANISM.

I Application filed September 24, 1924. Serial No. 739,692.

This invention relates to improvements in weft replenishing mechanism of the multicolor type and more particularly to the give ways on which the bobbins are held as they await transfer. I

In the usual form of multi-color magazine the tip of the bobbin, when intransferring position, is supported by two yieldable supports while the head or butt of the bobbin is supported on the rear side bya yieldable giveway and on the front side by a fixed and immovable guideway usually formed as, an

, integral part of the frame of the replenishing mechanism. VVithsuch a construction breakages occasionally occur due to a bobbin being caughtunder the transferrer while it is still on the fixed support. It is to be understood that the bobbins are subject to slight variations and that the larger ones sometimes stick in the releasing devices so that they are slower in startingtoward transfer position. Under these conditions it is likely that as the transferrer descends it will strike the butt of the bobbin andbreak the I fixed guideway.

It isthe principal object of our present to a loom it is essentialthat the delivery point of the bobbins bear a very definite relation to the lay. In the'past the fixed guideway has been used for the purpose of setting the replenishingmechanism, a gauge being'provided to fit a portion of the guideway and thus position the replenishing mechanism with respect to the loom; Because of the use that is made of the giiideway in setting the loom parts, it is necessary that it shall always hear the same relation tothe lay. It is accordingly a further object of our invention to provide a givewayat this point which shall be incapable of adjustment and which will always return to the same position irrespective of adjustments in any of the other bobbin giveways. In carrying this feature of our invention into effect we-findzit desirable to make the spring which permits yielding movement of the giveway considerably stronger than the spring for the rear giveway-. Unless there is danger of breakage it is desirable that all the yielding for the butt of the bobbin be done by the rear support, the forward support serving as a guide to direct the bobbin into the shuttle.

VVit-h these and other objects in view which will appear as the description proceeds, our invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings wherein we have shown one form ofour invention,

Fig. 1' is a side elevation of the lower portion of a multi-color weft replenishing mechanis n having our invention applied thereto, Fig. 2 is a horizontal section on line 22 of Fig. 1, looking in the direction of the arrows,

Fig. 3 is a vertical? section taken on line -33.of Fig. 2 and looking toward the butt of the bobbin, and showing a portion of the lay and the relation that the same sustains to the butt guideways, and

Fig. 4 is a perspective view of the giveway forming the subject matter of our invention.

. Referring to the drawings, it will be seen that we have provided a weft replenishing mechanism having inner and outer frameslO and -11,respectively, which are held together by tie rods 12. The outer frame 11 is provided with a pair of bobbin tip giveways 13 which are of substantially the same construction and each of which comprises a bobbin guide 14 hung on a pair of links or supports 15 and 16, respectively. The inner links15 have pivotal connection with the frame 11 as at 17 and the outer links 16 are pivotally mounted on certain ofthe tie rods 12. The lower end of each of the links 15 isprovided with a 'slot 18 which receives a bolt 19 by means ofhwhich the vertical position of the guide 13 may be varied. Each of the links 15 is also provided with an adjusting screw 20 positioned for engagement with some portion of the frame 11'to afford horizontal adjustin'ent of the guideways 13. Springs 21, which are secured to collars22 carried by certainof the tie rods 12, are connected to the links 16 and serve to move the guideways 13 toward bobbin supporting position.

The rear support for the butt'of vthe bobbin adj accnt the inner frame 10 comprises lever 23 having a'bobbin guideway 2 1 and pivoted as at 25 to the lower end oflink 26,

the upper portion of which is inonnted loosely on-one ofthe tie rods. A (2011 spring 27 has one end held in adjusted position-by a of lever 23 is bent upwardly a:t'29-and'ca:rvries a pm 80 which has adjustable contact 1 threaded 1n achnlr32 Wll'lClle with ascrew is pivoted as at 83 to the frame 10. The giveways h ereinbefore described may be substam tially of the form shown in Patents Nos. 1366,9450 and 1, l95g7lc The replenishing mechanism is spaced above a lay 34 which has a binder 35 and a her; back 3'6 to receive shuttle The matter thus far described is of the-usual construct-ion and'forrns no specitic part of our pr sent invention.

In carrying out our invention we provide a giveway 40 with abobbin g uideoi run 41 terminatingin a vertical lip lQ. Spaced from the run-Aland on the oppositesideot'traine 10 isran arm sltlintegral with'the juide and formed with abearing: l lto rec; ve a: stud or other pivot 45 mounted on said frame. The arm 43 coinrccted'to the uideway all by a neclnl dharing an upper face lTpositioned to engage the under side of theframe 10. 'l hear i alsopro' led'with aboss 48 which rec es thclowen endiot aspring 49 the upper endof'whicn is held toa fixed part otthe frame 10 asattl);

The stud or pit'ot only-slightly 'toxone side'ofi a vertical linepassing-through ithe lip 42 so that the latter will always be-above the shuttle binder when swingingomthe; pivot. The guided-l is in substantialalignment with ,E 1 l a flan-gelil' .iormed on tne traine lO and so placed as to direct thebobbins into the guide 41. Spring; 4L9'is much-stronger than spring 27 and inallnorinal operations 01"" the replenishingrmechanism the bobbins will be supported oi ntly by-the lever 23' andfthe lip 42 before the transferrer 52' starts downwardly. However. should the b'obbinrran to be properly positioned and be=caughtby thetransterrer the giveway 40 will'inore to the lettxa-sindicated in dottcd lines inFig:

It'will-be observed thatthc giveway 4e0iis entirely tree'ol any adjustn ient. and that spring 4-9 willalways return sur taceltoithe lowerportion of the frame 10 thus keeping the gi-vcway inthe same normal position. Because oi" this construction it is possible-to set the replenishing mechanism c witln respect to thedayil l by ineansof argauge blockl as hereinbefore' explained.

From the foregoing; 'it will be seen that'we have provided a weft" replenishing mechanism with a yielding-bobbin release sufiieientlystrong to remainimmovable during allnorma l operations of the ineehanisrnbut capable of movement. to prevent breakage. It will also be noted thatthe*giveway 'ispurthe same and thus give the mechanism an llllproper, setting with respect to the lay. Als it \villlbev seenthat the pivot. to so placed that the guide 4:11will1have only afrcry, slight downwardmotion as it moves; but 7 pivot 45 is so pla-ceeli that it will permit yielding of the givcway for any position of the bobbin whereetho lattcrs can-be struck by the trans- 't'errer.

Having thusdescribed our invention it will beapparent that changes and inod'it atimis may be made therein by those skilled in the art: and we donotvwishto be in,- 'ted to the details herein disclosed, but what .eclaini 1'; A support fora the butt end of a bobbin foraeweftrreplenishing inecha ism, said support having a guideway for the bobbin terminating in at substantially vertical lip, a spaced' supportingarm and a n clr connect ing the guidewaynandcthe supporting ar1n,.all of said parts being integral theneclr ad noted for engagement with a POEtlOH Of the re- PlQHlSl llIIQHDOCl]itlliSln and the arm havinga bearing therein for pivotal:mounting of the guidewa-yremote from the neclr.

2: In weftreplenishing inechanisnn a pair of yieldablc'supportsfor the butt of-the bobbill; a relatively light yielding device conneetedl'to one of said'supports, a relatively lieaa y yieldingydevice connected to the other support; saidcyielding devices holding the supports: in-norinal position and acting to return-said!supports after a yielding movement to the same position with respect to the replenishing mechanism, the support havin'gtherelatively light yielding derice being y-ieldable nnderxthe normal operation of the replenishing mechanism, While the support connectedtothe relatively heavy yieldin device remains normally stationary but is yleldable under abnormal conditionsof the mechanisin. a I

3'. I112 aa weft? replenishingmechanism for loomsaisupporrt for the'rearof? the butt of the-bobbin; relatively light yielding means to Hold i said: supportv in; normal position, second'supporti for thefront of'the' butt of the bobbin, and"relatively heavy yielding means operatively connected to said second named supportztoholtl the sainein normal position to cause saidsecond' support to offer a relatively high resistanceato movement;

4.1[1'1 a, Weft; replenishing; mechanism for looms a: painoftyielding supports for the bobbin 1 always: returnable: after yielding movementz to ithe samepositionz with respectf tothe replenishingmechanism, a yielding device connected": to: eachsupport holding the supportsirin normal position, one of said'yield yielding device remains in substantially the same position for all normal operations of the mechanism.

5. In a weft replenishing loom, weft replenishing mechanism, a lay, a pair of yielding supports for the butt of the bobbin, a pair of yielding supports for the tip of the bob bin, relatively weak yielding means to hold one support for the butt of the bobbin in normal position, relatively strong yielding means to hold the other support for the butt of the bobbin in yielding position, said other support for the butt of the bobbin corresponding to the strong yielding means being held in normal position by a force greater than the force holding the first named support for the butt of the bobbin in normal position, said other support being yieldable under abnormal conditions only and remaining normally at rest and returnable always to the same position with respect to the re plenishing mechanism and the lay after a yielding movement. 7

6. In a weftreplenishing mechanism for looms, a pair of yielding supports for the butt of the bobbin, a pair of yielding supports for the tip of the bobbin, said supports being independent of one another but al ways returnable after yielding movement to the same position with respect to the replenishing mechanism, a yielding device connected to each support holding the support in normal position, one of the yielding devices for the corresponding support for the bobbin butt being relatively weak and the other yielding device for the other support for the bobbin but being relatively stronger than the first named yielding device, the said other device and corresponding bobbin butt support remaining substantially stationary for all normal operations of the loom and the first named support for the bobbin butt yielding.

7. In a weft replenishing mechanism for looms, a pair of spaced independently movable surfaces to engage the butt of a bobbin on opposite sides thereof, said surfaces being returnable to the same positions after each movement thereof, and a yielding means operatively connected to each surface, said means being of unequal strength and acting to hold the surfaces in normal position with different degrees of firmness, one of said means, acting with a greater force than the other means, so that the surface corresponding thereto will remain stationary while the other surface yields during the normal operation of the mechanism.

8, In a weft replenishing mechanism for looms a pair of yielding supports for opposite sides vof the same end of the bobbin always returnable after yielding movement to the same position with respect to the replenishing mechanism, a yielding device connected to each support holding the supports in normal position with different degrees of firmness, one of said yielding devices being weaker than the other and offering less resistance to movement of the corresponding support than is offered by the other yielding device whereby said other yielding device remains in substantially the same position for all normal operations of the mechanism.

In testimony whereof we have hereunto affixed our signatures.

JOHN E. HUME. WILLIAM H. KING. 

